Boiler-repair plug.



E. C. WORNS. BOILER REPAIR PLUG. APPUCATIQN FILED MAY 5. 1916.

Patented 001:. 2,1917.

WITNESSES ATTORNEYS To'allxzoh'om it may concern: 7 g

l liewit known that I, EDWIN CnWORNS, a .citi/Jen of theUnited States, anda resident 'ofthe cityof -New York, borough of Manhattan, ,in the county and State of New YorhjhaVe invented a new and Improved iBoiler-ltepai-r-"Plug, of which the following i'is-afull, clear, and exact description. invention relates to a device for clos- Zing- .leaks"inz1range boilers, kitchen utensils,

\ v "pedientsare employed for pluggin a hole articles of the,'class referred to, but,.infvariably, these become. ineffective in a I; shorter or. longejrtime according to the charf acter ofthe-repair 'deviceyso that leakage again occurs at thepoint or repair. e

Y'The'general object of my invention is to ,p'rovidea: repair plug that Ewill effectively- ."closeitheleakage hole and maintain the same "closed for. an indefinite period. a I i with ,facility,"even to a'..range boiler, the in.-

i manipulation ofthe plug. i

.The invention will be particularly exfing drawings forming'a part'of this specifi- "cation in which similarreference characters 1 indicate corresponding parts in all the "Vi s a i i a i Figure 1 is a sideelevation of a range boiler partly broken away, showing the manner of applying the inner member of my improved device;

Fig. 2 is r a; transverse. section taken i i40 wall of the repaired article, the view show- -,--ing 1the plug in position sealing a hole of the a Fig. 3 is a front view; of. the improved :7 Pl i 451 Fig.4 is a view similar to Fig. 3 but showf-in'g a slightly modified shape of the device.

. My invention includes an, inner clamp plate 10. formed on a-stud'll.

outer &elamp .p1ate or disk 12,, which has 1 a threaded bore to-take onto said stud. On Ashe, outer face of ,jthedisk'12, wings 13 are seamews PLUG. 5

, us eciscatio tf Lettersfeltent.

' and other vessels and containers. Various v v A further object of the nvention is "to provide a repairzpluglthat may be applied terior. .of. which is not accessible. for the *plained in the specific description following.

1" Reference is to be hadto the accompany through my improved plug and through the i which, at the center, is g g g 1 a the form illustrated inFig. 3 are round; in l-Thesaid stud;11', for'its major portion and except at the base and extreme outerv fiend, threaded, and isadapted to receive providedgforturning the same, the disk thus STATES PAT NT OF CE,

x "I 'EDWDI o. wows, or New YORK, iv. v. r

- PatentedOct.2, 1 917. Application filed a a, 191 Seria1No.95 ,573. a

constituting in effect, a combined wing, nut

and clamp. e i 3 i The opposed faces of the clampdisks 10 and 12, are adapted to receive washers 14: of

asbestos'or rubber, according to the char-ac: ter ofithe articleto which the device is apaetionat the peripheral edges oft-he [plates and to accommodate the washers without causing the sameto be forced to anygappreciable iextentbeyond. the edges ofthedisks and thereby, maintain an ample portion ofv thewashers within the disks to give amore effective fluid-tight binding action of the washers against the opposed-surfaces of thc boiler A, or thelike. The faces of the plates, 10, 12, are formed with. grooves 15, prefer ably annular and therefore continuous, the

grooves serving to-give an eflective'engagement'with the washersand assisting in preventing the forcing of the .washers edgewise from between theolamp'plates.

The washers are: perforated. at the [center for the passageof the.: ,s'tud.11;] It willbe noted from Fig. 2 that .the'base 16 0f the stud 11 is' conicalso thatwhenthesaidstud I is passed througha hole a to be sealed, the base 16 will be wedged into the hole expanding the same to a uniformly round and smooth edge. The base 16 will of itself form a complete closure of the hole a and thus materially aid in stopping the leak. Any leakage, however, around the base 16 will be effectively taken care of by the washers 14:

under the pressure of the clamp plates 10, 12.

It is exceptionally difiicult to stop a leak in a range boiler, or the like, as the various expedients on the market have failed in practiee to maintain the leak sealed forany. great lengthoftime. The base 16 is smooth and 'unthreaded. Devices are known that include a conical screw which cuts its own thread in the wall of thearticle being repaired but the wedglng action of the conical screw is Illllllfied by the screw thread which it cuts.

The clamp plates of my improved plug in T Fig. 4-1 have shown an oval plate 12, designed for use where the puncture, instead of being perfectly round, is'more in the form of The outer end of the stud 11 is formed with an eye17, which is adapted to receive a i suspension cord 18 so that the inner disk may be dropped into a range boiler A through a nipple or sput 2) thereof (generthe-hole a as indicated in' dotted lines, Fig.

1. The'cord can n be g p until the stud '11 of the plate 10 is drawn outwardly through the hole a.

After the stud 11. has

been grasped by the workman, the cord 18 may be removed and theinner clamp plate 10 with its Washer 1 1 brought to a bearing against the wall of the boiler at the interior.

The outer washer 14 and outer clamp plate 12 are now applied to the stud 11 and the screwing-up of the outer clampplate on the .studll, will-Wedge the conical base 16 tightly into'the hole and bind the washers firmly against the opposite surfaces of the boiler. V

Theinnerwasher 1-1, it'will be observed, snugly embraces the conical base 16 and the provision of the grooves lii in'the adjacent clamp plate, together with the concave form of the said plate togive an edge contact, in-

suresan ample engagement of the washer With theconical base so that the washer is directly and immediately effective at the hole to be sealed. In addition, the broad surface of the washer and the edge contact M of the clamp plates prevent the escape of leakage beyond the clamp plates even should washer-12, said coned base will be properly accommodated'in said washer.

Havlng thus described my-lIlVG11t10Il I claim as new, and desire to secure by Letters Patent a slight leakage occur around the baseof the A; sealingplug of the class described-in- I eluding an inner clamp plate, a lateral stud thereon atthe center, said stud having a smooth conical base, threads beyond the base,

and an eye at the end of the stud beyond the threads; an outer clamp plate having a tlireadedboreto take onto the said stud,- and i provided on the outer face thereof with Wings constituting the said. plate a wing nut, I

and separate washers on the opposed'faces of the said clamp plates, the said opposed faces being concave and having'grooves therein 1 for engagement with theadjacent' faces of the washers.

' iEDWIN C. W ORNS.

. Copies of this patent maybe-obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G." I 

